My understanding is that "down is on" is the traditional british way, while "down is off" is the IEC/EN "harmonised" way.
Switchgear nowadays is largely harmonised, or at least built from components designed to harmonised standards even if the assembly as a whole is country specific. Electrical acessories on the other hand are not.
EDIT Some houses built in the UK for the US forces had 120V-0-120V supplies and all-American outlets so would have had up for on in the US-style wall plates.
I remember a bloke taking a Wylex CU back to the wholsesalers who refused to replace it because he had beggard up the mainswitch (red rocker) by opening it up up "correct it" because it was "upside down" , OH deary me
Apart from staying in a Git while rewiring another which was in the process of being considerably extended my European travel in the last 30 years has been limited to fairly touristy Hotels, the place in Portugal didn't seem to have any pattern and the rockers were fine, as in not prominent and hardly moved so very fiddly to locate and operate, there seemed to be lots of 2 way switching there so I'm more than happy to accept that as an explanation. Hotel in Malta was without doubt uber British with our 3¼" format including 13, 5,15A and additionally 16A sockets. However as we booked in there was a customer complaining about the lights not working and several times said they'd put the switches up, from the accent we assumed from North America. Of course the problem was not putting the keycard in the slot and didn't believe the receptionists explanation that they had to go down, even to the point of being rude,
We have frequently travelled with Grandchildren and found they've only been confused in Dubrovnik and Peroj.
Cruise ships seem to be up = on except their switched 16A sockets.
Well there is plenty of merit in leaving things as they are in a lot of instances I agree with you.
Where a common consensus applies though a change might be inevitable, also if a safer way has more merit then we consider a change too.
I think if we just starting out today we would have picked down for off, given if you agree with that then changing to down for off might be appropriate in this case.
It`s a case of accidental offs being preferred to accidental ons and comparing that risk to what folk might normally expect.
So IMHO that change might well have been the best compromise and as time goes by the what we have always been used to changes proprtionally.
Other may disagree though.
Well there is plenty of merit in leaving things as they are in a lot of instances I agree with you.
Where a common consensus applies though a change might be inevitable, also if a safer way has more merit then we consider a change too.
I think if we just starting out today we would have picked down for off, given if you agree with that then changing to down for off might be appropriate in this case.
It`s a case of accidental offs being preferred to accidental ons and comparing that risk to what folk might normally expect.
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